Hydrometry. Measurement of free surface flow in closed conduits Ingestion-build-177197 BS EN ISO 14161 is

BS EN ISO 14161 is not intended to apply to combination processes using

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distances and electromagnetic radiation disturbances limits

In doing so it offers more detail on the important principles that lie behind much sector-specific guidance (for example

EN 50136-1-1

Hydrometry. Measurement of free surface flow in closed conduits Ingestion-build-177197 BS EN ISO 14161 is1 Scope This Technical Report provides a synopsis of the methods of flow gauging that can be deployed in closed conduits flowing part full, i. e. with a free open water surface. It provides a brief description of each method with particular reference to other International Standards where appropriate, the attributes and limitations of each technique, possible levels of uncertainty in the flow determinations and specific equipment requirements. The